1. University Hospital for Infectious Diseases “Dr. Fran Mihaljević,” Zagreb, Croatia
2. Department for Infectious diseases, University of Zagreb, School of Medicine, Croatia
3. Professor at Department of Pharmacology, University of Zagreb, School of Medicine
4. Department of Pediatrics, University Hospital of Split, Croatia
5. Department of Pediatrics, Rijeka University Hospital Center, Croatia
6. Department of Pediatrics, Faculty of Medicine, University of Rijeka, Croatia
7. Department of Pediatrics, University Hospital Osijek, Croatia
8. Professor at Department for Infectious diseases, University of Zagreb, School of Medicine, Croatia.